Internal-combustion engine



A rii 29, 1924.. I 1, 91,940

A. J. WILLIAMSON INTERNAL COMBUS'T ION v ENGINE Filed Oct/5, 1920 s Sheets-Sheet 1 A TTOR/VEV April 29, 1924. 1,491,940

A. J. WILLIAMSON INTERNAL COMBUSTION ENGINE Filed Oct.

INVENTOR.

ATTORNEY u.-- 11 1 ii a 7 MW f. M 2 25 a 4 v T M c 2 U b V 5 I 5 I ATTORNEY 3 Sheets-SheetB ARTHUR J. WILLIAMSUN, 0F BROOKLYN, NEW YORK.

INTERNALCOMBUSTION ENGINE.

Application filed October 5, 1920. Serial No. 414,942.

To all whom it may concern: I

Be it known that I, ARTHUR J. WILLIAM- SON, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented a new and useful Internal-Comb'us tion Engine, of which the following is a specification.

The invention relates to internal combustion engines, and the object is to provide an advantageous construction involving 'oppositely moving power members whereby the eflect of a long-stroke motor is secured with out sideslap. The invention may accord ingly be said to comprise the parts, improvements and combinations hereinafter described and more particularly pointed out in the appended claims.

In the accompanying drawings, forming part hereof:

Figure 1 is a vertical section in the plane of the axes'through an engine comprising two units, one of the units being shown in full section with the exception of its piston, and the other being mainly in elevation inside'of its receiving cylinder;

Fig. 2 is 'a'vertical axial section through one of the units, in a plane at right angles to that of Fig. 1;

Figs. 3 and 4 are horizontal sections on the lines 33 and 4-4, respectively, of Fig. 2; and p I Figs. 5 to 8 are diagrams of operation.

Each of the units has a stationary cylinder casting 1, containing an eccentric cylinder bore 2, and a. spark-plug chamber 3 at one side of the cylinder bore, the cylinder bore and spark-plug chamber being in open communication at the top. Suitable" water-' cooling spaces 4 are also included in each. cylinder casting; and slotted exhaust ports 5- open from the upper part of the bore into exhaust passages 6 passing downward through the water-spaces, and emerging toward the bottom at 7. The lower part oi each spark-plug chamber is open at the outer side, as seen in Fig. 2, for insertion and removal of the spark-plug 8, which is screwed upward into an-ofpenin in a contraction of the upper part 0 the c amber.

A power piston 9 works inside each cylinder-bore, and is connected with the crankshaft 10 by a connecting rod 11.

Each unit also includes a power head 12, which moves oppositely to the piston, united with which head is a skirt 13 working on manded by the cylindrical exterior of the cylinder casting 1, the skirts being connected with the crank-shaft by connecting rods 27, working on suitable pivot portions 28 of the sleeves.

A stationary receiving cylinder 14, bolted at the bottom with flanges of the cylinder casting and the crank-case 15, surroundsv the head 12 and its skirt 13,'which work there! in. An intake port in the head is coman inwardly opening, pressurecontrolled valve 16, biased to closing by a light spring 17. The two receiving cylinders are connected at the top bya transfer conduit 18, which is connected with the carbureter by a conduit 19 containing a checkvalve 20. r

i The exhaust of each unit is controlled by a sleeve valve 21 reciprocating between the piston and the cylinder bore, and containing exhaust ports 22 to co-operate with those of the cylinder casting. These sleeves are op erated from a half-time. shaft 23 by eccen tries 24 and connecting links 25. Half-time gearing 26 between the crank-shaft and valve shaft is seen in Fig. 1. i

The connections are so disposed that the pistons and heads of the two units operate in unison, that is to say, in both units these members move toward each other at the same time and apart at the same time. The eccentrics for the exhaust sleeve valves,

The diagrams illustrate the cycle in oneof the units. Fig. 5 shows the beginning of the firing stroke; Fig. 6 the beginning of the exhaust stroke; Fig. 7 thebeginning of the intake stroke; and Fig. 8 the beginning of the compression stroke. The intake valve is held closed by the internal pressure except on the intake stroke, when however, are set 180 apart on the half time the. ipartial vacuum between the separating power members causes it tov open. the two heads 12 move downward 1n the receiving cylinders 14, fuel mlxture is drawn into these cylinders past the check valve and when the heads move up to gether, the contentsof one of the receiving chambers is displaced through the conduit 18 into the-other, whence the joint contents pass the open intake valve 16 of this head into the widening space between it and the correspondin piston, The gases in the receivmg cham ers are preheated, and receive some initial compression.

Packing rings are placed in the relatively sliding surfaces where necessary.

Wha't'I claim as newv is: a v a 1. In an internal combustion four-cycle engine, the combination of an inner cylinder, a power piston operating therein, a power. head moving oppositely to. and encircling said piston and'cylinder and having a skirt outside of said cylinder,'a'crankshaft and connecting rods between the same and the piston and skirt, an outer receiving cylinder in which the head and its skirt 'op erate, an intake valve in saidhead, and a reciprocating sleeve valve "controlling the exhaust operating" between the said inner cylinder. I n 2. In, an internal combustion four-cycle piston and When , bore.

engine, the combination of an inner cylinder castlng containing a cylinder bore, a

spark-plug chamber and a water-coolingspace, a power piston operating in said bore, a power head moving oppositely to the piston and having a skirt working on the outa side of the cylinder casting, a crank-shaft and "connecting rods between the same and the piston and skirt, anouter, receiving cylinder in which the head and its skirt operate, an intake valve'in said head, and a sleeve valve controlling theexhaust rec1procating between" the piston and cylinder .ineans; the two receiving cylinders being in commnnication; a crank-shaft and connections whereby the pistons and integral heads of'the two ,units operate in unison; and half-time connections whereby the operation of the exhaust valve means of the two units is appropriately displaced.

. ARTHUR J. WILLIAMSON k 

